Safety Information
WARNING: To minimize the risk of potential safety problems, you should follow all applicable local and national
codes that regulate the installation and operation of your equipment. These codes vary from area to area and it is
your responsibility to determine which codes should be followed, and to verify that the equipment, installation, and
operation are in compliance with the latest revision of these codes.
Equipment damage or serious injury to personnel can result from the failure to follow all applicable codes and stan-
dards. We do not guarantee the products described in this publication are suitable for your particular application,
nor do we assume any responsibility for your product design, installation, or operation.
If you have any questions concerning the installation or operation of this equipment, or if you need additional infor-
mation, please call us at 1-800-633-0405 or 770-844-4200.
This publication is based on information that was available at the time it was printed. At Automationdirect.com®
we constantly strive to improve our products and services, so we reserve the right to make changes to the prod-
ucts and/or publications at any time without notice and without obligation. This publication may also discuss
features that may not be available in certain revisions of the product.
WARNING! Electric shock danger
1. To prevent electric shock, do not touch the AC terminals while the power is supplied to the controller.
This controller is an open-type temperature controller. Make sure to evaluate any dangerous application in which
a serious human injury or serious property damage may occur.
1. Always use recommended solder-less terminals: Fork terminal with insolation (M3 screw, width is 7.0mm, hole diam-
eter 3.2mm). Screw size: M3 x 6.5 (With 6.8 x 6.8 square washer). Recommended tightening torque: 0.4 Nm (4kgfcm).
Applicable wire: Solid/twisted wire of 2 mm, 12AWG to 24AWG. Choose AutomationDirect part numbers BM-00120,
BM-00220 or BM-00320 depending on wire size. Be sure to tighten them properly.
2. Protect the controller from dust or foreign objects to prevent controller malfunction.
3. Do not modify or disassemble the controller.
4. Do not connect anything to the “Not used” terminals.
5. Make sure all wires are connected correctly.
6. Do not install and/or use the controller in places subject to: (a) Dust or corrosive gases and liquid (b) High humidity (c)
Vibration and shock (d) EMI / RFI (e) high temperature.
7. Turn power off when wiring or changing a temperature sensor.
8. Be sure to use wires that match the thermocouple types when extending or connecting the thermocouple wires.
9. Use wires with correct resistance when extending or connecting a platinum resistance thermometer (RTD).
10. Keep the wire as short as possible when wiring a platinum resistance thermometer (RTD) to the controller and route
power wires as far as possible from load wires to prevent interference and induced noise.
11. This controller is an open-type unit and must be placed in an enclosure away from high temperature, humidity, drip-
ping water, corrosive materials, airborne dust and electric shock or vibration.
12. Make sure power cables and signals from instruments are all installed properly before energizing the controller,
otherwise serious damage may occur.
13. To prevent electric shock, do not touch the terminals in the controller or try to repair the controller when power is
applied.
14. Use a soft, dry cloth to clean the controller. Do not use acid or alkaline liquids for cleaning.
15. This instrument is not furnished with a power switch or fuse. Therefore, if a fuse or power switch is required, install
the protection close to the instrument. Recommended fuse rating: Rated voltage 250 V, Rated current 1 A. Fuse type:
Time-lag fuse
16. Note: This controller does not provide overcurrent protection. Use of this product requires that suitable overcurrent
protection device(s) must be added to ensure compliance with all relevant electrical standards and codes. (Rated 250
V, 15 Amps max). A suitable disconnecting device should be provided near the controller in the end-use installation.